package core.controller;

import core.config.EventMappings;
import core.config.EventMappingsItem;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ActionController extends HttpServlet {

    private static final long serialVersionUID = 1L;
    public static EventMappings eventMappings = null;
    private static String FIELD_NAME_PROPERTI = "eventFieldName";

    @Override
    public void init() throws ServletException {
        super.init();
        String projectPath = getServletContext().getInitParameter("projectPath");
        ServletParameters.setProjectPath(projectPath);
    }

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * 
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            response.setContentType("text/html;charset=UTF-8");
            String eventName = request.getParameter(getInitParameter(FIELD_NAME_PROPERTI));
            EventMappingsItem emi = eventMappings.getEventMappingsItem(eventName);
            EventHandler eventHandler = (EventHandler) Class.forName(emi.getEventDescription().getEventHandler()).newInstance();
            eventHandler.setRequest(request);
            eventHandler.setResponse(response);
            eventHandler.setSession(request.getSession());
            eventHandler.setParameters(request.getParameterMap());
            eventHandler.setEventDescription(emi.getEventDescription());
            String redirectTo = "";
            if (!eventHandler.hasErrors()) {
                redirectTo = eventHandler.perform();
            } else {
            }
            if (redirectTo != null) {
                request.getRequestDispatcher(redirectTo).forward(request, response);
            }
        } catch (Exception ex) {
            Logger.getLogger(ActionController.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * 
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * 
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * 
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
